Preheat oven to 400°F and line a large sheet pan with parchment paper.
In a large bowl, combine ground turkey, grated zucchini, breadcrumbs, egg, garlic, Italian seasoning, 1/2 teaspoon salt, and black pepper; mix until just combined and form into 16-20 meatballs.
In another bowl, toss sweet potato cubes with 2 tablespoons olive oil, smoked paprika, and remaining 1/2 teaspoon salt.
Arrange sweet potatoes on one side of the sheet pan and place meatballs on the other side, then drizzle meatballs with remaining 1 tablespoon olive oil.
Bake for 25-30 minutes, flipping meatballs halfway through, until meatballs reach 165°F internal temperature and sweet potatoes are tender and golden.
Garnish with fresh parsley and serve warm.